Rcc slabs whose thickness ranges from 10 to 50 centimetres are most often used for the construction of floors and ceilings. Waffle slab construction process includes fixing forms, placement of pods on shuttering, installation of reinforcement between pods, installation of steel mesh on top of pods, and pouring of concrete. Fiber reinforced concrete overview for concrete pavement and overlays general overview of fibers used for concrete pavements with an emphasis on macro fibers and their effect on concrete properties and pavement construction. Construction of precast reinforced concrete structures. Cracks in reinforced concrete columns due to increased load on the slab 4. The behaviour of concrete slabs subjected to fire conditions is complex. Different types of slabs in construction december 25, 2017 january 26, 2018 by kathir 2 comments.
Concrete slabs are commonly divided into the following types. It has been the most common material used in slabs but several new. A modern behaviour of reinforced concrete slab subjected. Moment of inertia method i gross concrete section only find moment of inertia of gross concrete section see table 11. Pdf cost optimum design of reinforced concrete simply. A reinforced concrete slab is a broad, flat plate, usually horizontal, with top and bottom surfaces parallel or nearly so.
Introduction concrete slabs on grade are a very common type of concrete construction. Cracks in plain and reinforced concrete posses a challenging to civil engineers from the six decades. The construction and design of concrete slabs on grade. Concrete slab floors come in many forms and can be used to provide great thermal comfort and lifestyle advantages. Slab may be supported on walls or beams or columns.
Steel reinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner mud slabs. The rcc slab were modeled to show the role of slab thickness, percentage of reinforcement, width of slab and different boundary condition when expose to fire loading. Slabs are constructed to provide flat surfaces, usually horizontal in building floors, roofs, bridges, and other types of structures. Types of reinforcement in footings or types of mesh in. The slab may be supported by walls, by reinforced concrete beams usually cast monolithically wit. Beamless slabs beamless slabs are supported only on columns and are applied mostly in large industrial and.
Fip 8 design and specification of fiberreinforced concrete. Slabs can be onground, suspended, or a mix of both. This is the most common type of reinforcement for regular rcc structures. In addition to static loading, reinforced concrete rc structures during their lifespan may be subjected to various types of dynamic loading in the form of earthquake, impact and blast. The slab may be supported by walls or by reinforced concrete beams usually cast monolithically with the slab or by structural steel beams or by columns, or by the ground.
Structural analysis methods for the assessment of reinforced concrete slabs. Structural concrete structures reinforced concrete construction. Slab supported directly by columns are called flat slab. Increasingly, fibers are being used to replace temperature and shrinkage reinforcement in concrete and, in some applications, prim ary reinforcement.
Punching behavior of bubbledeck type reinforced concrete. They can be insulated, both underneath and on the edges. Asce, secb course content slab on grades construction. There are mainly 4 types of steel reinforcement used in concrete structures. There are different types of concrete slabs, and different types of reinforcing used in slabs. What are the 16 different types of slabs in construction.
With rapid development of the infrastructure around the. Details of these various types of concrete, their properties and applications are discussed. Manual for design and detailing of reinforced concrete to. A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. This document is a companion report to overview of fiber reinforced concrete bridge decks, which summarizes the experience from existing bridge deck and bridge deck overlay construction projects that have employed frc materials. Design of reinforced concrete 10th edition pdf free. Concrete slab types construction, cost, and applications.
Reinforcement detailing of reinforced concrete slabs. The performance of the specimens reinforced with fibers are compared with that of the specimens reinforced. Several useful documents on fiber reinforced concrete frc have been developed by aci committee 544, fiber reinforced concrete, including a design guide, aci 544. The construction and design of concrete slabs on grade d. Design of reinforced concrete 10th edition pdf free download. A reinforced concrete footing fig 3 supports a 12x12 column reaction p100 kips at the top of footing. Maximum chloride ion content of concrete aci 318 maximum type of member cl prestressed concrete 0. A reinforced concrete slab is the one of the most important component in a building. Modern reinforced concrete can contain varied reinforcing materials made of steel, polymers or alternate composite material in conjunction with rebar or not. An attempt has been need in this thesis to understand the various types of cracks occurring in. Different types of concrete are produced based on the constituent material, mix design, the method of construction, area of application, form of hydration reaction.
Different types of slabs in construction civil snapshot. The paper presents the cost optimization of reinforced concrete simply supported oneway slabs under uniformly distributed load with the nonlinear programming approach. To study the flexural behaviors of the concrete shear walls with precast hollow slab, one cast insitu reinforced concrete shear wall and two precast twoway hollow slab shear walls. Pdf design of reinforced concrete slabs ninos dinkha. Types of slabs in reinforced concrete construction, slabs are used to provide flat, useful surfaces. Fletcher reinforcing offers a range of mesh sheet sizes and centres to meet the needs of typical new zealand applications.
Reinforced concrete slabs, at least those designed to span in one direction, are no different conceptually from any other beams, with the following three caveats. Why concrete cracks by steve vandewater cracks in concrete are extremely common but often misunderstood. Reinforcement detailing of a slab is done based on its support conditions. Slabs are constructed to provide flat surfaces, usually horizontal, in building floors, roofs, bridges, and other types of structures. Manual for design and detailing of reinforced concrete to the september 20 code of practice for structural use of concrete 20 2. Besides being a medic, he loves blogging, and he always strives hard to share the highquality content with others. Slab supported on two sides and bending takes place predominantly in one direction only is called one way slab. The latter consists primarily of reinforcing with deformed steel bars rebar, that can be from 14 in. Coffered slabs as a perspective type of the reinforced concrete structures. Fiber reinforced concrete overview for concrete pavement. Various types of rcc slabs civil engineering projects. The bubbledeck type slab bd is a reinforced concrete rc flat slab that includes recycled plastic hollow spheres rphs in its core for decreasing its dead weight. The rcc slab were modeled to show the role of slab thickness. When an owner sees a crack in his slab or wall, especially if the concrete is relatively new, he automatically assumes theres something wrong.
Singlespan reinforced concrete slabs with a solid cross section is the most econo mical. Waffle slab grid slab it is a type of reinforced concrete slab that contains square grids with deep sides. Effects for both materials in rcc slab at elevated temperatures are also evaluated. Pdf impact performance of reinforced concrete slabs. For slabs spanning in both directions published tables and charts should be used to find bending moment and shear per unit width of slab. Different types of reinforced concrete engineering basic. Reinforced concrete slab an overview sciencedirect topics. Cracks in reinforced concrete columns due to shrinkage of concrete 3. Reinforced concrete may also be permanently stressed concrete in compression, reinforcement in tension, so as to improve the behaviour of the final structure under working loads. A modern behaviour of reinforced concrete slab subjected to fire metri shanker 1. Twoway concrete slabs with openings the static system and the design of reinforcement.
A finite element model may be created to analyse a complicated loading arrangement. Based on the soil test, allowable bearing capacity of soil is 5 ksf. Types of steel reinforcement used in concrete structures. Deicing salts are a major cause of corrosion of reinforcing steel in concrete. Download design of reinforced concrete textbook by civilenggforall in pdf format useful for the students preparing for gate, ies, semester exams.
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